Date: Wed, 24 Jul 2002 12:17:41 -0700 From: "Balaji, Pavan" <pavan.balaji@intel.com> To: "'James Snow'" <snow@teardrop.org>, ntai@mac.com Cc: freebsd-questions@FreeBSD.ORG Subject: RE: Number of mbuf clusters (NMBCLUSTERS) Message-ID: <3D386AED1B47D411A94300508B11F18703BC5C25@fmsmsx116.fm.intel.com>
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You can increase the maximum number of clusters in /usr/src/sys/sys/sysctl.h
and recompile the kernel. But make sure that you have a stable kernel image
ready, just in case you increase this value so much that your kernel doesn't
boot ;)
I guess the default value is around 9, while for 256MB mem, you can go upto
maybe 10000 clusters.
Pavan Balaji,
Intel Corporation
"Only the Paranoid Survive" -- Andy Grove
> -----Original Message-----
> From: James Snow [mailto:snow@teardrop.org]
> Sent: Wednesday, July 24, 2002 2:05 PM
> To: ntai@mac.com
> Cc: freebsd-questions@FreeBSD.ORG
> Subject: Re: Number of mbuf clusters (NMBCLUSTERS)
>
>
> Funny that you should post this at exactly the same time
> that I was beginning to look for other instances of the
> 'mbuf clusters exhausted' message.
>
> On Sat, Jul 13, 2002 at 11:56:18PM -0400, naoyuki_tai@mac.com wrote:
> >
> > I'm seeing a bit of problem with my FreeBSD 4.6 stable server.
>
> Me:
>
> FreeBSD 4.6-STABLE.
>
> > My server: FreeBSD 4.6 Stable, Intel P3 933 / 256M Memory /
> a pair of
> > 60G IDE drives (Seagate ATA IV). NIC: Intel EtherExpress 100+
> > NFS export.
>
> Me:
>
> dc0: <82c169 PNIC 10/100BaseTX>
>
> > Jul 12 09:28:54 nile /kernel: All mbuf clusters exhausted,
> > please see tuning(7).
>
> I got a bunch of these yesterday, while scp'ing files to
> this machine.
>
> > The drive is hooked up to a Promise PCI ATA/UDMA 100
> > controller card.
>
> The drive I was writing to is controlled by:
>
> atapci1: <Promise ATA100 controller>
>
> Curious....
>
>
> -Snow
>
>
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